Shouldn't the bartender get annoyed that Marty is ripping pages out of his phonebook?
I don't have a lot of experience with phonebooks, but I'm sure they aren't completely disposable, and certainly not during that time. Marty just removed like a 100 names out of that phonebook and the bartender doesn't seem to care. And before you say he didn't notice, like sure, if that's honestly what you wanna believe, but come on, the guy is clearly staring at him when he rips it (probably hears it at least) and then Marty isn't shown to be sheepish or anything about it as he is holding the page in clear view of the guy in the next shot and is asking him questions concerning names on the page he just ripped.
Both Marty's and the bartender's actions tell me that ripping a page out of a phonebook isn't a big deal, and you can't convince me otherwise as the scene would have been at least slightly different if it were an issue (Marty would've hidden it away immediately and would've been more sly with the ripping part). Thoughts?